Add support for building package on ArchLinux

[vanadium23]

I've added support for ArchLinux installation & information about dependencies for it.

[sayden]

Didn't work for me until I did some changes:

• Add

      "archrolling" )
        echo "ubuntu16" "pacman"
        return 0
        ;;

At the beginning of detect_linux() function. You have added in a later stage in the same function but in my case it wasn't arriving there even.

Add:

"arch linux"* | "archrolling"* )
        echo "ubuntu16" "pacman"
        return 0
        ;;

On the same function in the "second part". You already added arch linux but in my distribution it was being recognized as archrolling

Finally, I can use Aerospike with python :)

[dundee]

There is now AUR package for the aerospike python client - https://aur.archlinux.org/packages/aerospike-client-python